HBL-11-003, Decommissioning Funding Report

Decommissioning Funding Report

ML110910149
Person / Time
Site:	Humboldt Bay
Issue date:	03/31/2011
From:	Conway J Pacific Gas & Electric Co
To:	NRC/FSME, Document Control Desk
References
HBL-11-003, OP-DPR-07
Download: ML110910149 (33)

Text

Pacific Gas and Electric Company John T. Conway 77 Beale Street Senior Vice President-Energy Supply & Mail Code B32 Chief Nuclear Officer San Francisco, CA 94105 March 31,2011 415.973.3336 Internal: 223.3336 Fax: 415.973.2313 PG&E Letter HBL-11-003 10 CFR 50.75 Alternate Address Diablo Canyon Power Plant

p. O. Box 56 U.S. Nuclear Regulatory Commission Avila Beach, CA 93424 ATTN: Document Control Desk 805.545.3333 Fax: 805.545.4884 Washington, DC 20555-0001 Docket No. 50-133, OP-DPR-7 Humboldt Bay Power Plant Unit 3 Decommissioning Funding Report for Humboldt Bay Power Plant Unit 3

Dear Commissioners and Staff:

PG&E is submitting the decommissioning funding report for Humboldt Bay Power Plant (HBPP) Unit 3, pursuant to the requirements of 10 CFR 50.75(f).

Humboldt Bay Unit 3 At the end of calendar year 2010, the market value of the HBPP Unit 3 (220 MWt) decommissioning trust funds was $313.8 million. PG&E estimates an additional

$69.15 million (future nominal dollars) will need to be collected over three years beginning in 2011 based on a site-specific decommissioning cost estimate prepared by TLG Services, Inc., and approved by the California Public Utilities Commission (CPU C) per Decision 0.10-07-047. The CPUC Application is based on an Independent Spent Fuel Storage Installation (ISFSI) that would be in operation until 2020 when all fuel would be removed from HBPP by the Department of Energy (DOE).

The market value of the HBPP trust, plus actual incurred costs through 2010, is lower than the minimum amount of the NRC decommissioning estimate of

$619.0 million (2011 dollars) that was calculated pursuant to the requirements specified in 10 CFR 50.75(c), which is based on a minimum 1200 MWt plant.

PG&E is confident the HBPP trust, with the noted additional contributions, will be sufficient to ensure successful decommissioning and maintaining the spent fuel in an ISFS"I at HBPP until 2020 based on a site-specific decommissioning cost estimate prepared by TLG Services, Inc., and approved by the CPUC Decision 0.10-07-047.

Supporting Cost Estimates Based on a site-specific cost estimate prepared by TLG Services, Inc., PG&E has estimated that the decommissioning costs are approximately $555.9 million (including

$127.0 million disbursed from the Trust(s) through December 2010 and $317.6 million future radiological removal costs) for HBPP Unit 3 in 2010 dollars. These costs do not include site restoration of the facilities ($2.0 million), nor spent fuel management until 2020 ($109.3 million).

Document Control Desk PG&E Letter HBL-11-003 March 31,2011 Page 2 To assure that sufficient funds will be available for decommissioning, PG&E has established external sinking trust fund accounts for HBPP Unit 3.

Supporting Enclosures Supporting documentation for this report is included as Enclosures 1 through 4. provides decommissioning funding status information in a format suggested by Nuclear Energy Institute (NEI) and the NRC. provides information on the escalation of the required decommissioning funding amounts from 1986 dollars to 2010 dollars. As required by 10 CFR 50.75(c)(2),

and using NUREG-1577, "Standard Review Plan on Power Reactor Licensee Financial Qualifications and Decommissioning Funding Assurance," Revision 1, and NUREG-1307, "Report on Waste Burial Charges," Revision 14, the information includes escalation factors for energy, labor, and waste burial costs. is Appendix D from the TLG Services, Inc. decommissioning cost estimate report prepared in March 2009 for PG&E for HBPP Unit 3. The TLG Services, Inc. cost estimate has then been adjusted to reflect the costs in 2011 dollars per the CPUC Decision D.1 0-07 -04 7. The report provides cost estimates for decommissioning of nuclear, non-nuclear facilities, and spent fuel management, including operation of the ISFSI. is a cash flow of the total decommissioning of HBPP that identifies the monies for NRC scope (removal of radiological contamination), site restoration (including the nonradiological work), and the spent fuel management.

There are no regulatory commitments in this letter.

Should you have any questions in regard to this document please feel free to call Mr. Bob Kapus at (707) 444-0810.

Sincerely,

~

/.

Joh T. Conway Senior Vice President - Energy Supply and Chief Nuclear Officer Enclosures cc/enc: Elmo E. Collins, NRC Region IV John B. Hickman, NRC Project Manager INPO HBPP Humboldt Distribution

Enclosure 1 PG&E Letter HBL-11-003 NRC Decommissioning Funding Status Report Humboldt Bay Power Plant - Unit 3 (220 MWt)

(2 pages)

Enclosure 1 PG&E Letter HBL-11-003 Page 1 of 2 NRC Decommissioning Funding Status Report Humboldt Bay Power Plant - Unit 3 (220 MWt)

As provided in 10 CFR 50. 75(f)(1), each power reactor licensee is required to report to the NRC on a calendar year basis, beginning March 31, 1999, and annually thereafter, on the status of its decommissioning funding for each reactor that it owns and has already closed.

$ in Millions

1. The minimum decommissioning fund estimate, pursuant to 10 CFR 50.75(b) and (C).1 January 2011 dollars $619.0 (HBPP is a shutdown unit with a Site Specific Cost Study; therefore, the minimum decommissioning fund estimate is based on the Site Specific Cost Study shown in item 8 of this enclosure.)

2. The amount accumulated at the end of the calendar year preceding the date of the report for items included in 10 CFR 50.75(b) and (c). (Alternatively, the total amount accumulated at the end of the calendar year preceding the date of the report can be reported here if the cover letter transmitting the report provides the total estimate and indicates what portion of that estimate is for items not included in 10 CFR 50.75(b) and (c)).

Market Value (December 201 0 dollars) $313.8

3. A schedule of the annual amounts remaining to be collected for items in 10 CFR 50.75(b) and (c). (Alternatively, the annual amounts remaining to be collected can include items beyond those required in 10 CFR 50.75(b) and (c) if the cover letter transmitting the report provides a total cost estimate and indicates what portion of that estimate is for items that are not included in 10 CFR 50.75(b) and (c)). All values below are from 2009 Nuclear Decommissioning Cost Triennial Proceeding (NDCTP) filing, Final Decision D.10-07-047.

Amount remaining $69.15 Number of years to collect beginning in 2010 3 years Annual amount to be collected $23.05 1

• The NRC formulas in section 10 CFR 50.75(c) include only those decommissioning costs incurred by licensees to remove a facility or site safely from service and reduce residual radioactivity to levels that permit: (1) release of the property for unrestricted use and termination of the license; or (2) release of the property under restricted conditions and termination of the license. The cost of dismantling or demolishing nonradiological systems and structures is not included in the NRC decommissioning cost estimates. The costs of managing and storing spent fuel on site until transfers to Department of Energy are not included in the cost formulas.

Enclosure 1 PG&E Letter HBL-11-003 Page 2 of 2

4. The assumptions used regarding escalation in decommissioning cost, rates of earnings on decommissioning funds (assumes trust will be gradually converted to a more conservative, all fixed income portfolio after 2010), and rates of other factors used in funding projections (all values below are from the2009 NDCTP filing).

Escalation in decommissioning costs Rate of Return on Qualified Trust 2011 3.76 percent Rate of Return on Qualified Trust 2012 3.34 percent Rate of Return on Qualified Trust 2013 2.95 percent Rate of Return on Qualified Trust (2014-2020) 2.95 percent Rate of Return on Nonqualified Trust 2011 2.95 percent Rate of Return on Nonqualified Trust 2012 2.95 percent Rate of Return on Nonqualified Trust 2013 2.95 percent Rate of Return on Nonqualified Trust (2014-2020) 2.95 percent

5. Any contracts upon which the licensee is relying pursuant to 10 CFR 50.75(e)(1 )(v).

NONE

6. Any modifications to a licensee's current method providing financial assurance occurring since the last submitted report.

NONE

7. Any material changes to trust agreements.

NONE

8. California Public Utilities Commission (CPUC) Submittal in 2011 dollars in millions:

Total Project (Decommission 2011) $559.9 Scope Excluded from NRC calculations $ 2.0 Scope of ISFSI from Licensing to Decommissioning in 2020 $109.3 Scope Decommissioned and disbursed from Trust(s) $127.0 Total NRC Decommissioning Remaining Scope $317.6

Enclosure 2 PG&E Letter HBL-11-003

• 2011 Decommissioning Estimate (1 page)

• Composite Escalation (1 page)

• Development of B Component (1 page)

• Development of E Component (7 pages)

• Development of L Component (7 pages)

Enclosure 2 PG&E Letter HBL-11-003 2011 Decommissioning Estimate Nuclear Regulatory Commission Estimate of Decommission Costs for Boiling Water Reactor (BWR) in 2011 HBPP BWR

($ in Millions)

January 1986 Estimate $114.8 Escalated to 1999 $128.9 (Table 2.1 in NUREG 1307, Revision 12, has no value for 1999 Burial)

Escalated to 2000 $400.2 ($360.9 in 2000 Submittal)

Escalated to 2001 $354.1 ($425.3 in 2001 Submittal)

Escalated to 2002 $357.4 ($445.6 in 2002 Submittal)

Escalated to 2003 $373.8 ($430.1 in 2003 Submittal)

Escalated to 2004 $388.0 ($439.6 in 2004 Submittal)

Escalated to 2005 $416.8 ($453.2 in 2005 Submittal)

Escalated to 2006 $519.2 ($494.3 in 2006 Submittal)

Escalated to 2007 $549.8 ($548.6 in 2007 Submittal)

Escalated to 2008 $565.6 ($590.9 in 2008 Submittal)

Escalated to 2009 $574.4 ($573.8 in 2009 Submittal)

Escalated to 2010 $596.8 ($596.6 in 2010 Submittal)

Escalated to 2011 $619.0 January 1986: based on 10 CFR 50.75(c) Table of Minimum Amounts.

BWR based on minimum 1200 MWt = ($104 + (.009xMWt>> million per unit where BWR less than 1200 MWt use P=1200 MWt, HBPP 220 MWt

Enclosure 2 PG&E Letter HBL-11-003 Composite Escalation Calculating Overall Escalation Rate BWR Jan-86 Jan-99 Jan-OO Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Weight (1 )

L (Labor) 1.0000 1.5624 1.6370 0.9365 0.9733 1.0122 1.0612 1.0958 2.0724 2.1465 2.2207 2.2639 2.2928 2.3299 0.65 E (Energy) 1.0000 0.8257 1.0220 1.1841 0.9715 1.2003 1.2131 1.4810 1.8656 1.8226 2.3961 1.7963 2.1190 2.3659 0.13 B (Burial) 1.0000 0.0000 10.4061 10.5540 10.7015 11.0993 11.5119 12.3889 13.3331 14.3491 14.4164 14.9931 15.6028 16.2269 0.22 (1) From NUREG-1307, Revision 14, Report on Waste Burial Charges, Section 2 Summary, Page 3 ... where A, B, and C are the fractions of the total 1986 dollar costs that are attributable to labor (0.65), energy (0.13), and burial (0.22), respectively, and sum to 1.0.

(2) Jan-01, Jan-03, Jan-05, Jan-07, and Jan-08 B (Burial) value in this table see calculation notes in Development of B Component spreadsheet BWR Combined Escalation Rate for:

Jan-86 Jan-99 Jan-OO Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 1.0000 1.1229 3.4862 3.0846 3.1133 3.2558 3.3801 3.6303 4.5229 4.7890 4.9265 5.0035 5.1984 5.3919

Development of B Component Enclosure 2 PG&E Letter HBL-11-003 Development of Burial Escalation Developed from NUREG-1307, Revision 14 Table 2.1 "VALUES OF B SUB-X AS A FUNCTION OF LLW BURIAL SITE, WASTE VENDOR, AND YEAR" (Summary for non-Atlantic Compact).

Revised to Bx Values for Generic LLW Disposal Site (Assumed to be same as that provided for the Atlantic Compact for lack of a better alternative at this time).

BWR BWR Burial Costs Restated to (South Carolina} 1986 = 100 1986 1.561 1.0000 1987 1988 1.831 1.1730 1989 1990 1991 2.361 1.5125 1992 1993 9.434 6.0436 1994 9.794 6.2742 1995 10.42 6.6752 1996 10.379 6.6489 1997 13.837 8.8642 1998 13.948 8.9353 1999 0.0000 2000 16.244 10.4061 2001 16.474 10.5535 2002 16.705 10.7015 2003 17.326 11.0993 2004 17.970 11.5119 2005 19.339 12.3889 2006 20.813 13.3331 2007 22.399 14.3491 2008 25.231 16.1634 2009 26.240 16.8099 2010 27.292 17.4837 2011 28.384 18.1830 Table 2.1 Note ('c) From 7/1/95 through 6/30/2000 access was allowed for all states except North Carolina. Effective 7/1/2000 rates are based on whether a waste generator is or is not a member of the Atlantic Compact.

2001 has no information in NUREG-1307 Rev 12. 2001 is an estimate that is calculated by applying the average percent change between 2000 and 2002, and adding to the 2000 base 2003 has no information in NUREG-1307 Rev 12. 2003 is an estimate that is calculated by applying the average percent change between 2002 and 2004, and adding to the 2002 base 2005 has no information in NUREG-1307 Rev 12. 2005 is an estimate that is calculated by applying the average percent change between 2004 and 2006, and adding to the 2004 base.

2007 has no information in NUREG-1307 Rev 12. 2007 is an estimate that is calculated by applying the average percent change between 2004 and 2006, and adding to the 2006 base.

2008 has no information in NUREG-1307 Rev 12. 2008 is an estimate that is calculated by applying the average percent change between 2004 and 2006, and adding to the 2007 base.

2009 has no information in NUREG-1307 Rev 13. 2009 is an estimate that is calculated by applying the average percent change between 2006 and 2008, and adding to the 2008 base.

2010 has no information in NUREG-1307 Rev 13. 2010 is an estimate that is calculated by applying the average percent change between 2006 and 2008, and adding to the 2008 base 2011 is an estimate that is calculated by applying the historical estimated escallation of 1.04 percent of previous year and adding to the 2010 base

Enclosure 2 PG&E Letter HBL-11-003 Page 1 of 7 Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt = 0.46 Jan-86 114.2 82.0 1.0000 1.0000 1.0000 Feb-86 115.0 62.4 1.0070 0.7610 0.8938 Mar-86 114.4 51.3 1.0018 0.6256 0.8287 Apr-86 113.7 49.8 0.9956 0.6073 0.8170 May-86 114.1 47.0 0.9991 0.5732 0.8032 Jun-86 115.3 44.7 1.0096 0.5451 0.7960 Jul-86 116.2 36.4 1.0175 0.4439 0.7537 Aug-86 116.3 40.1 1.0184 0.4890 0.7749 Sep-86 116.3 46.3 1.0184 0.5646 0.8097 Oct-86 113.0 43.1 0.9895 0.5256 0.7761 Nov-86 112.7 43.5 0.9869 0.5305 0.7769 Dec-86 112.3 45.6 0.9834 0.5561 0.7868 Jan-87 110.3 51.4 0.9658 0.6268 0.8099 Feb-87 109.8 53.1 0.9615 0.6476 0.8171 Mar-87 110.2 49.7 0.9650 0.6061 0.7999 Apr-87 109.9 52.0 0.9623 0.6341 0.8114 May-87 111.8 53.3 0.9790 0.6500 0.8277 Jun-87 113.9 55.1 0.9974 0.6720 0.8477 Jul-87 116.2 56.3 1.0175 0.6866 0.8653 Aug-87 115.7 59.4 1.0131 0.7244 0.8803 Sep-87 115.5 56.8 1.0114 0.6927 0.8648 Oct-87 111.0 59.3 0.9720 0.7232 0.8575 Nov-87 109.2 61.2 0.9562 0.7463 0.8597 Dec-87 109.6 58.1 0.9597 0.7085 0.8442 Jan-88 108.8 54.8 0.9527 0.6683 0.8219 Feb-88 109.0 51.5 0.9545 0.6280 0.8043 Mar-88 109.0 49.7 0.9545 0.6061 0.7942 Apr-88 109.1 53.3 0.9553 0.6500 0.8149 May-88 108.9 54.3 0.9536 0.6622 0.8195 Jun-88 117.2 50.6 1.0263 0.6171 0.8380 Jul-88 118.2 46.9 1.0350 0.5720 0.8220 Aug-88 118.3 46.8 1.0359 0.5707 0.8219 Sep-88 118.5 45.9 1.0377 0.5598 0.8178 Oct-88 114.2 42.3 1.0000 0.5159 0.7773 Nov-88 109.2 47.2 0.9562 0.5756 0.7811 Dec-88 110.5 50.6 0.9676 0.6171 0.8064 Jan-89 112.0 54.9 0.9807 0.6695 0.8376 Feb-89 112.0 54.0 0.9807 0.6585 0.8325 Mar-89 112.3 57.3 0.9834 0.6988 0.8525 Apr-89 112.4 61.5 0.9842 0.7500 0.8765 May-89 113.6 57.5 0.9947 0.7012 0.8597 Jun-89 119.8 53.3 1.0490 0.6500 0.8655 Jul-89 122.2 52.7 1.0701 0.6427 0.8735 Aug-89 122.4 53.5 1.0718 0.6524 0.8789 Sep-89 122.5 59.3 1.0727 0.7232 0.9119 Oct-89 117.2 64.0 1.0263 0.7805 0.9132 Nov-89 113.5 64.4 0.9939 0.7854 0.8980 Dec-89 114.2 68.1 1.0000 0.8305 0.9220 Jan-90 114.9 85.3 1.0061 1.0402 1.0218 Feb-90 115.0 59.4 1.0070 0.7244 0.8770 Mar-90 115.4 60.4 1.0105 0.7366 0.8845

Enclosure 2 PG&E Letter HBL-11-003 Page 2 of?

Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt = 0.54 BWR wt= 0.46 Apr-90 115.1 61.0 1.0079 0.7439 0.8865 May-90 117.0 58.4 1.0245 0.7122 0.8808 Jun-90 123.9 53.0 1.0849 0.6463 0.8832 Jul-90 124.4 51.6 1.0893 0.6293 0.8777 Aug-90 124.6 72.3 1.0911 0.8817 0.9948 Sep-90 125.0 87.3 1.0946 1.0646 1.0808 Oct-90 121.2 104.8 1.0613 1.2780 1.1610 Nov-90 120.2 98.9 1.0525 1.2061 1.1232 Dec-90 118.9 89.3 1.0412 1.0890 1.0632 Jan-91 124.2 82.9 1.0876 1.0110 1.0523 Feb-91 124.3 74.3 1.0884 0.9061 1.0046 Mar-91 124.3 61.6 1.0884 0.7512 0.9333 Apr-91 124.7 60.0 1.0919 0.7317 0.9262 May-91 128.2 59.6 1.1226 0.7268 0.9405 Jun-91 132.6 57.6 1.1611 0.7024 0.9501 Jul-91 134.5 58.1 1.1778 0.7085 0.9619 Aug-91 133.8 62.1 1.1716 0.7573 0.9810 Sep-91 133.8 65.4 1.1716 0.7976 0.9996 Oct-91 128.3 67.6 1.1235 0.8244 0.9859 Nov-91 123.1 71.0 1.0779 0.8659 0.9804 Dec-91 125.1 62.2 1.0954 0.7585 0.9405 Jan-92 125.9 54.4 1.1025 0.6634 0.9005 Feb-92 125.3 57.3 1.0972 0.6988 0.9139 Mar-92 125.8 56.0 1.1016 0.6829 0.9090 Apr-92 124.8 59.0 1.0928 0.7195 0.9211 May-92 128.5 62.1 1.1252 0.7573 0.9560 Jun-92 134.8 65.4 1.1804 0.7976 1.0043 Jul-92 135.6 64.6 1.1874 0.7878 1.0036 Aug-92 135.1 63.3 1.1830 0.7720 0.9939 Sep-92 135.9 65.6 1.1900 0.8000 1.0106 Oct-92 131.2 68.2 1.1489 0.8317 1.0030 Nov-92 125.5 64.2 1.0989 0.7829 0.9536 Dec-92 126.7 59.4 1.1095 0.7244 0.9323 Jan-93 127.1 59.0 1.1130 0.7195 0.9320 Feb-93 126.4 60.4 1.1068 0.7366 0.9365 Mar-93 126.7 63.2 1.1095 0.7707 0.9536 Apr-93 126.8 62.4 1.1103 0.7610 0.9496 May-93 127.5 62.6 1.1165 0.7634 0.9541 Jun-93 136.9 60.8 1.1988 0.7415 0.9884 Jul-93 137.1 57.0 1.2005 0.6951 0.9680 Aug-93 137.2 54.4 1.2014 0.6634 0.9539 Sep-93 137.6 59.3 1.2049 0.7232 0.9833 Oct-93 131.9 65.4 1.1550 0.7976 0.9906 Nov-93 126.3 61.6 1.1060 0.7512 0.9428 Dec-93 126.0 51.4 1.1033 0.6268 0.8841 Jan-94 126.2 51.5 1.1051 0.6280 0.8856 Feb-94 125.9 57.5 1.1025 0.7012 0.9179 Mar-94 125.8 56.2 1.1016 0.6854 0.9101 Apr-94 125.4 54.7 1.0981 0.6671 0.8998 May-94 126.0 54.7 1.1033 0.6671 0.9027 Jun-94 133.5 54.1 1.1690 0.6598 0.9347

Enclosure 2 PG&E Letter HBL-11-003 Page 3 of?

Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES 10: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASEO TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt= 0.46 Jul-94 134.5 56.3 1.1778 0.6866 0.9518 Aug-94 134.5 57.5 1.1778 0.7012 0.9586 Sep-94 134.9 57.7 1.1813 0.7037 0.9616 Oct-94 129.1 57.7 1.1305 0.7037 0.9341 Nov-94 127.0 58.8 1.1121 0.7171 0.9304 Oec-94 127.4 54.7 1.1156 0.6671 0.9093 Jan-95 127.6 54.7 1.1173 0.6671 0.9102 Feb-95 128.0 53.3 1.1208 0.6500 0.9043 Mar-95 128.3 54.3 1.1235 0.6622 0.9113 Apr-95 126.4 57.1 1.1068 0.6963 0.9180 May-95 130.2 59.1 1.1401 0.7207 0.9472 Jun-95 135.3 55.8 1.1848 0.6805 0.9528 Jul-95 136.6 53.5 1.1961 0.6524 0.9460 Aug-95 136.5 55.6 1.1953 0.6780 0.9573 Sep-95 133.7 58.2 1.1708 0.7098 0.9587 Oct-95 131.4 57.8 1.1506 0.7049 0.9456 Nov-95 127.6 59.5 1.1173 0.7256 0.9371 Oec-95 127.7 60.6 1.1182 0.7390 0.9438 Jan-96 127.9 62.6 1.1200 0.7634 0.9560 Feb-96 127.1 59.7 1.1130 0.7280 0.9359 Mar-96 127.8 63.5 1.1191 0.7744 0.9605 Apr-96 129.1 74.7 1.1305 0.9110 1.0295 May-96 135.0 72.0 1.1821 0.8780 1.0423 Jun-96 137.5 62.8 1.2040 0.7659 1.0025 Jul-96 136.0 64.3 1.1909 0.7841 1.0038 Aug-96 136.2 66.5 1.1926 0.8110 1.0171 Sep-96 136.2 73.4 1.1926 0.8951 1.0558 Oct-96 131.2 79.7 1.1489 0.9720 1.0675 Nov-96 127.1 76.5 1.1130 0.9329 1.0301 Oec-96 127.7 76.1 1.1182 0.9280 1.0307 Jan-97 128.3 73.7 1.1235 0.8988 1.0201 Feb-97 128.1 72.3 1.1217 0.8817 1.0113 Mar-97 128.2 65.2 1.1226 0.7951 0.9720 Apr-97 127.3 65.3 1.1147 0.7963 0.9683 May-97 129.7 64.2 1.1357 0.7829 0.9734 Jun-97 135.1 60.8 1.1830 0.7415 0.9799 Jul-97 135.9 57.8 1.1900 0.7049 0.9669 Aug-97 134.7 61.5 1.1795 0.7500 0.9819 Sep-97 136.0 60.4 1.1909 0.7366 0.9819 Oct-97 130.1 64.8 1.1392 0.7902 0.9787 Nov-97 127.9 65.8 1.1200 0.8024 0.9739 Oec-97 128.3 59.4 1.1235 0.7244 0.9399 Jan-98 127.4 54.1 1.1156 0.6598 0.9059 Feb-98 127.2 52.0 1.1138 0.6341 0.8932 Mar-98 126.7 48.3 1.1095 0.5890 0.8701 Apr-98 126.4 50.2 1.1068 0.6122 0.8793 May-98 129.2 50.0 1.1313 0.6098 0.8914 Jun-98 133.8 46.3 1.1716 0.5646 0.8924 Jul-98 134.8 45.0 1.1804 0.5488 0.8898 Aug-98 135.2 44.0 1.1839 0.5366 0.8861 Sep-98 135.2 48.3 1.1839 0.5890 0.9103

Enclosure 2 PG&E Letter HBL-11-003 Page 4 of?

Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt= 0.46 Oct-98 130.4 47.4 1.1419 0.5780 0.8825 Nov-98 127.6 46.2 1.1173 0.5634 0.8625 Dec-98 126.6 38.8 1.1086 0.4732 0.8163 Jan-99 126.1 40.9 1.1042 0.4988 0.8257 Feb-99 125.5 38.2 1.0989 0.4659 0.8077 Mar-99 125.5 42.8 1.0989 0.5220 0.8335 Apr-99 125.2 52.5 1.0963 0.6402 0.8865 May-99 127.4 52.6 1.1156 0.6415 0.8975 Jun-99 131.0 52.4 1.1471 0.6390 0.9134 Jul-99 133.9 58.7 1.1725 0.7159 0.9624 Aug-99 133.9 63 1.1725 0.7683 0.9866 Sep-99 134.1 67.6 1.1743 0.8244 1.0133 Oct-99 129.5 65.5 1.1340 0.7988 0.9798 Nov-99 127.5 71.3 1.1165 0.8695 1.0029 Dec-99 126.5 72.9 1.1077 0.8890 1.0071 Jan-OO 126.8 75.3 1.1103 0.9183 1.0220 Feb-OO 126.7 87.9 1.1095 1.0720 1.0922 Mar-OO 126.7 89.7 1.1095 1.0939 1.1023 Apr-OO 126.8 83.1 1.1103 1.0134 1.0658 May-OO 128.6 82.9 1.1261 1.0110 1.0731 Jun-OO 133.6 86.2 1.1699 1.0512 1.1153 Jul-OO 136.2 88.7 1.1926 1.0817 1.1416 Aug-OO 137.4 91.6 1.2032 1.1171 1.1636 Sep-OO 137.8 110.1 1.2067 1.3427 1.2692 Oct-OO 134.1 108.6 1.1743 1.3244 1.2433 Nov-OO 130.9 108.4 1.1462 1.3220 1.2271 Dec-OO 132.7 100.6 1.1620 1.2268 1.1918 Jan-01 136.4 96.1 1.1944 1.1720 1.1841 Feb-01 136.4 91.6 1.1944 1.1171 1.1588 Mar-01 136.5 83.1 1.1953 1.0134 1.1116 Apr-01 135.1 86.2 1.1830 1.0512 1.1224 May-01 136.2 94.2 1.1926 1.1488 1.1725 Jun-01 148.4 90.2 1.2995 1.1000 1.2077 Jul-01 149.5 81.3 1.3091 0.9915 1.1630 Aug-01 148.9 83.2 1.3039 1.0146 1.1708 Sep-01 148.2 93 1.2977 1.1341 1.2225 Oct-01 143.8 76.8 1.2592 0.9366 1.1108 Nov-01 137.3 70.5 1.2023 0.8598 1.0447 Dec-01 136.9 56.6 1.1988 0.6902 0.9649 Jan-02 136.3 58.3 1.1935 0.7110 0.9715 Feb-02 135.4 59.6 1.1856 0.7268 0.9746 Mar-02 135.7 69.1 1.1883 0.8427 1.0293 Apr-02 135.4 76.4 1.1856 0.9317 1.0688 May-02 137.9 75 1.2075 0.9146 1.0728 Jun-02 143.6 71.4 1.2574 0.8707 1.0796 Jul-02 144.9 75.5 1.2688 0.9207 1.1087 Aug-02 145.0 77.9 1.2697 0.9500 1.1226 Sep-02 145.8 89.5 1.2767 1.0915 1.1915 Oct-02 140.0 95.1 1.2259 1.1598 1.1955 Nov-02 139.5 82.8 1.2215 1.0098 1.1241 Dec-02 139.6 84.6 1.2224 1.0317 1.1347

Enclosure 2 PG&E Letter HBL-11-003 Page 5 of?

Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt= 0.46 Jan-03 140.3 95.7 1.2285 1.1671 1.2003 Feb-03 140.6 120.4 1.2312 1.4683 1.3402 Mar-03 143.3 128.9 1.2548 1.5720 1.4007 Apr-03 144.3 98.3 1.2636 1.1988 1.2338 May-03 145.1 85.5 1.2706 1.0427 1.1657 Jun-03 148.3 87.2 1.2986 1.0634 1.1904 Jul-03 151.6 90.1 1.3275 1.0988 1.2223 Aug-03 151.3 94.1 1.3249 1.1476 1.2433 Sep-03 152.0 88.2 1.3310 1.0756 1.2135 Oct-03 147.4 97.8 1.2907 1.1927 1.2456 Nov-03 142.7 93.0 1.2496 1.1341 1.1965 Dec-03 142.9 95.8 1.2513 1.1683 1.2131 Jan-04 143.1 106.8 1.2531 1.3024 1.2758 Feb-04 143.1 100.8 1.2531 1.2293 1.2421 Mar-04 143.1 107.8 1.2531 1.3146 1.2814 Apr-04 143.1 115.2 1.2531 1.4049 1.3229 May-04 144.2 116 1.2627 '1.4146 1.3326 Jun-04 152.4 111.5 1.3345 1.3598 1.3461 Jul-04 152.2 119.3 1.3327 1.4549 1.3889 Aug-04 154.0 131.1 1.3485 1.5988 1.4636 Sep-04 154.0 136.8 1.3485 1.6683 1.4956 Oct-04 145.8 161.7 1.2767 1.9720 1.5965 Nov-04 144.9 153.6 1.2688 1.8732 1.5468 Dec-04 146.2 133.8 1.2802 1.6317 1.4419 Jan-05 148.9 138.5 1.3039 1.6890 1.4810 Feb-05 148.0 146 1.2960 1.7805 1.5188 Mar-05 148.1 169.4 1.2968 2.0659 1.6506 Apr-05 148.7 170.9 1.3021 2.0841 1.6618 May-05 151.1 165.3 1.3231 2.0159 1.6418 Jun-05 159.7 180.6 1.3984 2.2024 1.7683 Jul-05 162.1 186.2 1.4194 2.2707 1.8110 Aug-05 162.5 194.5 1.4229 2.3720 1.8595 Sep-05 162.8 209.9 1.4256 2.5598 1.9473 Oct-05 159.5 252.0 1.3967 3.0732 2.1679 Nov-05 161.1 199.1 1.4107 2.4280 1.8787 Dec-05 161.4 193.6 1.4133 2.3610 1.8492 Jan-06 167.0 191.8 1.4623 2.3390 1.8656 Feb-06 168.6 190.0 1.4764 2.3171 1.8631 Mar-06 167.4 199.2 1.4658 2.4293 1.9090 Apr-06 169.6 221.9 1.4851 2.7061 2.0468 May-06 170.8 231.4 1.4956 2.8220 2.1057 Jun-06 181.2 238.1 1.5867 2.9037 2.1925 Jul-06 181.9 231.6 1.5928 2.8244 2.1593 Aug-06 180.2 241.4 1.5779 2.9439 2.2063 Sep-06 181.0 203.1 1.5849 2.4768 1.9952 Oct-06 171.2 198.1 1.4991 2.4159 1.9208 Nov-06 167.2 198.2 1.4641 2.4171 1.9025 Dec-06 167.8 200.4 1.4694 2.4439 1.9176 Jan-07 171.9 180.0 1.5053 2.1951 1.8226 Feb-07 175.7 191.5 1.5385 2.3354 1.9051 Mar-07 172.1 215.1 1.5070 2.6232 2.0204

Enclosure 2 PG&E Letter HBL-11-003 Page 6 of7 Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES 10: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt = 0.46 Apr-07 173.1 231.8 1.5158 2.8268 2.1189 May-07 179.2 225.3 1.5692 2.7476 2.1112 Jun-07 186.7 222.4 1.6349 2.7122 2.1304 Jul-07 187.0 237.8 1.6375 2.9000 2.2182 Aug-07 187.6 225.5 1.6427 2.7500 2.1521 Sep-07 188.4 238.9 1.6497 2.9134 2.2310 Oct-07 182.7 243.3 1.5998 2.9671 2.2288 Nov-07 180.3 288.2 1.5788 3.5146 2.4693 Dec-07 180.0 266.7 1.5762 3.2524 2.3473 Jan-08 181.9 273.8 1.5928 3.3390 2.3961 Feb-08 180.0 280.2 1.5762 3.4171 2.4230 Mar-08 183.1 339.6 1.6033 4.1415 2.7709 Apr-08 185.2 352.5 1.6217 4.2988 2.8532 May-08 189.5 384.9 1.6594 4.6939 3.0553 Jun-08 191.9 410.5 1.6804 5.0061 3.2102 Jul-08 196.1 423.8 1.7172 5.1683 3.3047 Aug-08 197.1 343.9 1.7259 4.1939 2.8612 Sep-08 195.9 335.1 1.7154 4.0866 2.8062 Oct-08 193.0 279.0 1.6900 3.4024 2.4777 Nov-08 187.7 218.2 1.6436 2.6610 2.1116 Dec-08 188.3 163.0 1.6489 1.9878 1.8048 Jan-09 190.3 159.8 1.6664 1.9488 1.7963 Feb-09 190.3 145.6 1.6664 1.7756 1.7166 Mar-09 187.6 136.8 1.6427 1.6683 1.6545 Apr-09 186.9 159.9 1.6366 1.9500 1.7808 May-09 190.5 158.6 1.6681 1.9341 1.7905 Jun-09 193.3 183.7 1.6926 2.2402 1.9445 Jul-09 196.2 165.2 1.7180 2.0146 1.8545 Aug-09 194.7 196.1 1.7049 2.3915 2.0207 Sep-09 194.9 186.6 1.7067 2.2756 1.9684 Oct-09 189.9 193.3 1.6629 2.3573 1.9823 Nov-09 186.0 207.8 1.6287 2.5341 2.0452 Dec-09 186.0 197.5 1.6287 2.4085 1.9874 Jan-10 186.3 220.7 1.6313 2.6915 2.1190 Feb-10 186.1 200.2 1.6296 2.4415 2.0031 Mar-10 189.0 217.0 1.6550 2.6463 2.1110 Apr-10 188.8 231.5 1.6532 2.8232 2.1914 May-10 192.0 226.0 1.6813 2.7561 2.1757 Jun-10 197.8 212.4 1.7320 2.5902 2.1268 Jul-10 199.8 209.3 1.7496 2.5524 2.1189 Aug-10 200.8 221.4 1.7583 2.7000 2.1915 Sep-10 200.0 220.0 1.7513 2.6829 2.1799 Oct-10 194.7 236.0 1.7049 2.8780 2.2446 Nov-10 192.9 245.5 1.6891 2.9939 2.2893 Dec-10 191.3 252.1 1.6751 3.0744 2.3188 Jan-11 191.9 260.0 1.6804 3.1707 2.3659

Enclosure 2 PG&E Letter HBL-11-003 Page? of?

Development of E Component Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/06/09) and WPU0543 Industrial Electric Power (as of 03/06/09)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(1982 = 100) (1982=100) (1986 = 100) (1986=100) forBWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt = 0.54 BWR wt = 0.46 Oct 10 through Jan 11 are Preliminary Values from PPllndices

Enclosure 2 PG&E Letter HBL-11-003 Page 1 of 7 Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES ID: CIU20100000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factorfor West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Jan-86 89.8 1.00000 Feb-86 Mar-86 Apr-86 90.8 1.01114 May-86 Jun-86 Jul-86 91.2 1.01559 Aug-86 Sep-86 Oct-86 91.6 1.02004 Nov-86 Dec-86 Jan-87 92.5 1.03007 Feb-87 Mar-87 Apr-87 92.6 1.03118 May-87 Jun-87 Jul-87 93.7 1.04343 Aug-87 Sep-87 Oct-87 94.1 1.04788 Nov-87 Dec-87 Jan-88 95.4 1.06236 Feb-88 Mar-88 Apr-88 96.3 1.07238 May-88 Jun-88 Jul-88 97 1.08018 Aug-88 Sep-88 Oct-88 97.7 1.08797 Nov-88 Dec-88 Jan-89 98.8 1.10022 Feb-89 Mar-89 Apr-89 100 1.11359 May-89 Jun-89 Jul-89 101 1.12472 Aug-89 Sep-89 Oct-89 101.8 1.13363 Nov-89 Dec-89

Enclosure 2 PG&E Letter HBL-11-003 Page 2 of 7 Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES 10: CIU20100000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Jan-90 103.3 1.15033 Feb-90 Mar-90 Apr-90 104.5 1.16370 May-90 Jun-90 Jul-90 105.6 1.17595 Aug-90 Sep-90 Oct-90 106.3 1.18374 Nov-90 Dec-90 Jan-91 107.5 1.19710 Feb-91 Mar-91 Apr-91 108.9 1.21269 May-91 Jun-91 Jul-91 110 1.22494 Aug-91 Sep-91 Oct-91 110.9 1.23497 Nov-91 Dec-91 Jan-92 111.9 1.24610 Feb-92 Mar-92 Apr-92 112.9 1.25724 May-92 Jun-92 JUI-92 114.1 1.27060 Aug-92 Sep-92 Oct-92 114.9 1.27951 Nov-92 Dec-92 Jan-93 116.2 1.29399 Feb-93 Mar-93 Apr-93 116.4 1.29621 May-93 Jun-93 Jul-93 117.8 1.31180 Aug-93 Sep-93 Oct-93 118.1 1.31514 Nov-93 Dec-93

Enclosure 2 PG&E Letter HBL-11-003 Page 3 of?

Development of L Component Calculation of Labor Escalation Factor- Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES 10: CIU201 00000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Jan-94 119.4 1.32962 Feb-94 Mar-94 Apr-94 120.5 1.34187 May-94 Jun-94 JUI-94 121.3 1.35078 Aug-94 Sep-94 Oct-94 121.7 1.35523 Nov-94 Dec-94 Jan-95 122.6 1.36526 Feb-95 Mar-95 Apr-95 123.4 1.37416 May-95 Jun-95 Jul-95 123.9 1.37973 Aug-95 Sep-95 Oct-95 125 1.39198 Nov-95 Dec-95 Jan-96 125.9 1.40200 Feb-96 Mar-96 Apr-96 127.3 1.41759 May-96 Jun-96 Jul-96 128.3 1.42873 Aug-96 Sep-96 Oct-96 128.9 1.43541 Nov-96 Dec-96 Jan-97 130.3 1.45100 Feb-97 Mar-97 Apr-97 131.4 1.46325 May-97 Jun-97 JUI-97 132.5 1.47550 Aug-97 Sep-97 Oct-97 133.4 1.48552 Nov-97 Dec-97

Enclosure 2 PG&E Letter HBL-11-003 Page 4 of 7 Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES ID: CIU20100000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Jan-98 135.2 1.50557 Feb-98 Mar-98 Apr-98 136.6 1.52116 May-98 Jun-98 Jul-98 138.5 1.54232 Aug-98 Sep-98 Oct-98 140 1.55902 Nov-98 Dec-98 Jan-99 140.3 1.56236 Feb-99 Mar-99 Apr-99 142.1 1.58241 May-99 Jun-99 JUI-99 143.3 1.59577 Aug-99 Sep-99 Oct-99 144.7 1.61136 Nov-99 Dec-99 Jan-OO 147 1.63697 Feb-OO Mar-OO Apr-OO 148.8 1.65702 May-OO Jun-OO Jul-OO 150.8 1.67929 Aug-OO Sep-OO Oct-OO 151.8 1.69042 Nov-OO Dec-OO Jan-01 84.1 0.93653 Feb-01 Mar-01 Apr-01 85 0.94655 May-01 Jun-01 Jul-01 85.9 0.95657 Aug-01 Sep-01 Oct-01 86.9 0.96771 Nov-01 Dec-01

Enclosure 2 PG&E Letter HBL-11-003 Page 5 of 7 Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES 10: CIU201 00000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Jan-02 87.4 0.97327 Feb-02 Feb-02 Mar-02 Apr-02 88.5 0.98552 May-02 Jun-02 Jul-02 89.1 0.99220 Aug-02 Sep-02 Oct-02 89.8 1.00000 Nov-02 Dec-02 Jan-03 90.9 1.01225 Feb-03 Mar-03 Apr-03 92 1.02450 May-03 Jun-03 Jul-03 93.2 1.03786 Aug-03 Sep-03 Oct-03 93.8 1.04454 Nov-03 Dec-03 Jan-04 95.3 1.06125 Feb-04 Mar-04 Apr-04 96.2 1.07127 May-04 Jun-04 Jul-04 96.9 1.07906 Aug-04 Sep-04 Oct-04 97.4 1.08463 Nov-04 Dec-04 Jan-05 98.4 1.09577 Feb-05 Mar-05 Apr-05 99.3 1.10579 May-05 Jun-05 Jul-05 99.7 1.11024 Aug-05 Sep-05 Oct-05 (Note 1) 100 2.06000 Nov-05

Enclosure 2 PG&E Letter HBL-11-003 Page 6 of?

Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES ID: CIU201 00000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Dec-05 Jan-06 100.6 2.07236 Feb-06 Mar-06 Apr-06 101.8 2.09708 May-06 Jun-06 Jul-06 102.5 2.11150 Aug-06 Sep-06 Oct-06 103 2.12180 Nov-06 Dec-06 Jan-07 104.2 2.14652 Feb-07 Mar-07 Apr-07 104.9 2.16094 May-07 Jun-07 Jul-07 105.7 2.17742 Aug-07 Sep-07 Oct-07 106.5 2.19390 Nov-07 Dec-07 Jan-08 107.8 2.22068 Feb-08 Mar-08 Apr-08 108.4 2.23304 May-08 Jun-08 Jul-08 109.3 2.25158 Aug-08 Sep-08 Oct-08 109.4 2.25364 Nov-08 Dec-08 Jan-09 109.9 2.26394 Feb-09 Mar-09 Apr-09 110 2.26600 May-09 Jun-09 Jul-09 110.3 2.27218 Aug-09 Sep-09 Oct-09 110.6 2.27836 Nov-09

Enclosure 2 PG&E Letter HBL-11-003 Page 7 of 7 Development of L Component Calculation of Labor Escalation Factor - Reference NUREG-1307, Revision 14, Section 3.1 Using Regional Indices SERIES ID: CIU20100000002401 (as of 03/06/09)

Jan '86 adjusted to reflect NUREG 1307, Revision 14, Scaling Factor for West Labor (Pg 7)

Note 1: The Base Labor factor was reindexed in December 2005, at which time the index was reset to 100.

Employment Cost Indust West Region Labor Private Industry Escalation (1989=100) Factor Dec-09 Jan-10 111.3 2.29278 Feb-10 Mar-10 Apr-10 111.7 2.30102 May-10 Jun-10 Jul-10 112.3 2.31338 Aug-10 Sep-10 Oct-10 112.5 2.31750 Nov-10 Dec-10 Jan-11 113.1 2.32986 Jan-11 is an estimate based on cyclical differences between 0409-0110 and 0408-0109; roughly .6.

Enclosure 3 PG&E Letter HBL-11-003 Humboldt Bay Power Plant, Unit 3 Decommissioning Cost Study Area-By-Area Estimate (7 pages)

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY -AREA ESTIMATE Page 1 of 7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off-Site LLRW Off-Site LLRW Burial/ Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B ClassC GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt., Lb$. Manhours Manhours I

PERIOD 2 - SAFSTOR Dormancy ISFSI Completed Projects ISFSI Design & Licensing 1998-2000 - 5,362 5.362 - - - - - 5,362 - 5.362 -

ISFSI Design & Licensing 2001 - 398 398 - - - - - - 398 - 398 - -

ISFSI Design & Licensing 2002 - 114 114 - - - - - 114 - 114 -

ISFSI Design & Licensing 2003 - 2,539 2.539 - - - - - - - 2,539 - 2,539 -

ISFSI Design & Licensing 2004 - - 1,445 1,445 - - - - - - - 1,445 - 1,445 -

ISFSI Design & Licensing 2005 - - - 1,672 1,672 - - - - - - - 1,672 - 1,672 -

ISFSI Design & Licensing 2006 - - - 3,547 3,547 - - - - - - 3,547 3,547 -

ISFSI Design/Licensing/Construction 2007 - - 9,509 9,509 - - - - - - 9,509 9,509 - -

ISFSI Design/Licensing/Construction 2008 - - 29,200 29,200 - - - - - - - 29,200 29,200 -

ISFSI Design/Licensing/Construction 2009 - 500 500 - - - - - - - 500 500 -

HBPP Unit #3 1996 - 2008 Completed Projects Dismantlement of Ventilation Stack - - - 5,740 5,740 - - - - - 5,740 5,740 - -

Caisson In-Leakage Repair - - - 1,528 1,528 - - - - - - - 1,528 - 1,528 -

Suppression Chamber/Remove Baffling & Floor Plates - - - 7,931 7,931 - - - 7,931 7,931 - -

Site Characterization for Dismantlement - - - 1,150 1,150 - - - 1,150 1,150 - -

Miscellaneous Dismantlement Activities - - - 300 300 - - - 300 - 300 - - -

Planning Decommissioning Activity/Misc Dismantlement Activities - - 864 864 - - - - - - 864 - 864 - - -

Remove & Dispose Asbestos - - - - 800 800 - - - - - 800 800 - - -

Radiological Characterization Plant Systems - 732 732 - - - - 732 732 -

Irradiated Hardware Spent Fuel Pool Cleanout and Disposal - 2,676 2,676 - - - - - - 2,676 - 2,676 - - -

Removal & Disposal Energy Absorber - - 122 122 - - - - - - - - 122 - 122 - - -

Removal & Disposal Control Rod Drive Hydraulic Pump Equipment - - 201 201 - - 201 201 - -

Removal & Disposal Service Water Heat Exchanger Equipment - - - 66 66 - - - - - - - 66 66 - -

Removal & Disposal Reactor Water Cleanup Demineralizer Resin Tank - 37 37 - - - - - - 37 37 - -

Removal/Disposal Class A Radioactive Waste Material 1,045 1,045 - - - 1,045 1,045 -

Removal/Disposal Class B & C Materials inel Resin - 4,822 4,822 - - - - - - 4,822 4,822 - -

PERIOD 2 TOTALS - - 82,301 - 82,301 - - - - - - 82,301 - -

I PERIOD 3b - Planning and Preparation I

Period 3b Additional Costs 3b.2.1 Additional Support Facilities - Radiological Protection - - 1,385 267 1,652 - - - - - - - 1,465 282 1,747 -

3b.2.2 Additional Support Facilities - Access, Fencing, Laydown Areas - 378 73 451 - - - - - - - - - 400 77 477 - -

3b.2.3 Personnel & Material Access RB Access Shaft - - - 520 100 620 - - - - - - - - 564 109 672 - -

3b.2.4 Cross Contamination Plan 720 180 900 - - - - - 762 190 952 -

3b.2.5 Replacement of Rad Protection Access Software System - 480 120 600 - - - - - 508 127 635 - -

3b.2.6 Employee Emergency Notification System - - 320 80 400 - - - - 338 85 423 - -

3b.2.7 Infrastructure for Facility Modifications - 720 180 900 - - 762 190 952 -

3b.2.8 Mixed Waste Disposal 3 7 - 61 21 92 126 - - - - 4 8 70 - 23 104 18,395 -

3b.2.9 Rebuild Refueling Building Crane - - 1,418 273 1,691 - - - - - - 1,500 289 1,789 - -

3b.2.10 Sr-90 Groundwater Program - - 454 87 541 - - - - - - - - - 480 93 573 -

3b.2.11 Package Legacy Class B & C Waste - - 1,535 296 1,831 - - - - - - - - 1,666 321 1,987 - -

3b.2.12 Procure Initial Inventory of Tools and Equipment - - 2,100 405 2,505 - - - - - - - 2,221 428 2,650 - -

3b.2 Subtotal Period 3b Additional Costs 3 7 - 61 10,030 2,083 12,183 126 - - - - 4 8 - 70 10,609 2,203 12,894 18,395 -

Period 3b Collateral Costs 3b.3.1 Decon equipment 954 - 613 1,568 - - 1,010 - - - - 649 1,658 - -

3b.3.2 DOC staff relocation expenses - - - - 1,436 277 1,713 - - - - - 1,519 293 1,812 -

3b.3.3 Pipe cutting equipment - 1,000 - - - 321 1,321 - - 1,058 - - 340 1,398 - -

3b.3 Subtotal Period 3b Collateral Costs 954 1,000 - 1,436 1,211 4,602 - - 1,010 1,058 - - 1,519 1,281 4,868 -

Period 3b Period-Dependent Costs 3b.4.1 Decon supplies 14 - - - 5 19 - - - - 15 - - - - 5 20 - -

Period 3b Period-Dependent Costs (continued) - - - - - - - -

3b.4.2 Insurance - - - - 20 3 23 - - - - - - - 21 3 24 - -

3b.4.3 Property taxes - - - - - - - - - - - - - - - -

3b.4.4 Health physics supplies - 146 - - - 47 192 - - - 154 - - 49 203 - -

3bA.5 Heavy equipment rental - 74 - - - 24 97 - - 78 - - 25 103 -

3b.4.6 Disposal of DAW generated - - 0 0 - 29 - 9 39 116 - - - 0 0 34 10 44 2,318 1 3b.4.7 Plant energy budget - - - - - 45 9 53 - - - - 47 9 56 -

3b.4.8 NRC Fees - - - - - 61 8 69 - - - - - - - - 65 8 73 -

3b.4.9 Emergency Planning Fees - - - - 25 3 28 - - - - - - 26 3 30 3bA.10 Environmental/ Engineering Support - - - - 999 192 1,191 - - - - - - - - - 1,056 204 1,260 -

3b.4.11 ISFSI Operating Costs - - - - 21 4 25 - - - - - - 22 4 26 3b.4.12 Security Staff Cost - - - - - - 897 173 1,070 - - - - - - - 949 183 1,132 - 16,457 3bA.13 DOC Staff Cost - - - - 2,151 415 2,566 - - - - 2,276 439 2,714 - 25,113 3b.4.14 Utility Staff Cost - - - - - - 1,246 240 1,486 - - - - - - - - - 1,318 254 1,572 - 19,713 3b.4 Subtotal Period 3b Period-Dependent Costs 14 219 0 0 - 29 5,465 1,131 6,B60 116 15 232 0 0 34 5,781 1,196 7,259 2,318 1 61,2B2 3b.0 TOTAL PERIOD 3b COST 969 1,219 4 7 - 90 16,931 4,425 23,645 242 1,025 1,290 4 8 104 17,909 4,681 25,021 20,713 1 61,282

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY-AREA ESTIMATE Page 2 of7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off*Site LLRW Off*Site LLRW Burial I Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B Class C GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt., Lbs. Manhours Manhours PERIOD 3 TOTALS 969 1,219 4 7 90 16,931 4,425 23,645 242 . 1,025 1,290 4 8 . 104 17,909 4,681 25,021 20,713 1 61,282 PERIOD 4a

• Systems Removal Period 4a Direct Decommissioning Activities Removal of Major Equipment 4a.1.1 Main Turbine!Generator - 555 70 102 1,469 - 679 2,875 5,850 - 587 74 127 - 1,825 - 718 3,331 488,000 3,392 -

4a.1.2 Main Condensers - 496 914 41 3,047 - 1,264 5,762 12,135 - - - 525 966 52 - 3,786 - 1,337 6,665 247,000 1,984 -

4a.1.3 Remove Spent Fuel Racks 55 11 23 21 510 - 210 830 2,025 - - - 58 11 24 26 - 634 - 222 976 34,700 211 -

4a.1.4 Fuel Pool Cleanup - 415 80 495 - - - - - - - 439 85 524 - 750 -

Disposal of Plant Systems 4a.1.5.1 RB2-1 - 119 20 6 - 169 96 410 868 - - - 129 21 7 - 210 - 104 472 32,917 2,012 -

4a.1.5.2 RB2-2 124 25 7 - 233 119 509 1,089 - - 134 27 9 - 290 - 129 590 41,259 2,071 -

4a.1.5.3 RB2-3 205 9 2 - 20 74 310 322 - 222 10 3 - 25 - 80 340 12,297 3,538 -

4a.1.5.4 RB2-4 - 48 3 1 - 8 - 18 78 123 - - 52 3 1 10 20 86 4,686 820 -

4a.1.5.5 RB2-5 - 284 54 10 - 96 - 131 575 1,551 - 308 59 12 119 142 641 59,756 4,801 -

4a.1.5.6 RB2-6 367 24 7 63 - 143 604 1,024 - 398 26 8 79 - 155 666 38,844 6,263 -

4a.1.5.7 RB3-1 - 95 14 3 - 64 53 229 407 - - - 103 15 3 79 - 58 259 15,696 1,654 -

4a.1.5.8 RB4-1 148 30 9 - 213 121 520 1,354 - - 160 33 11 264 - 132 599 51,348 2,506 -

4a.1.5.9 TB1-1 283 122 41 - 1,620 635 2,702 6,430 - 308 133 51 - 2,013 689 3,193 242,716 4,932 -

4a.1.5.10 TB1-2 4 - - 1 5 - - 4 - - 1 5 - 68 -

4a.1.5.11 TB1-3 - 16 - 5 21 - 18 - - 6 23 - 291 -

4a.1.5.12 TB2-1 1,149 117 34 - 1,341 - 822 3,462 5,321 - 1,247 127 42 - 1,666 891 3,973 201,577 19,280 -

4a.1.5.13 TB2-2 38 - - 12 51 - 42 - - - 13 55 - 692 -

4a.1.5.14 TB3*1 - 509 85 23 - 429 - 316 1,361 3,601 - 552 92 28 - 532 - 343 1,548 134,937 8,633 -

4a.1.5.15 TB3-2 - 6 - - - 2 8 - - - - 7 - - - - 2 9 - 113 -

4a.1.5.16 TB3-3 clean area - 10 - - - - 3 14 - - - - 11 - - - - 4 15 - 188 -

4a.1.5.17 TB4-1 - 117 20 6 - 167 - 95 404 950 - - - 126 21 7 208 - 103 466 35,935 1,857 -

4a.1.5.18 TB4-2 - 697 62 17 458 - 382 1,615 2,602 - - - 756 67 21 569 - 415 1,827 98,837 11,710 -

4a.1.5.19 TB5-1 - 153 12 3 141 - 97 406 560 - - - 166 13 4 - 175 - 105 464 20,574 2,617 -

4a.1.5.20 TB5-2 - 92 13 3 - 107 - 66 280 498 - - - 100 14 4 132 72 322 18,961 1,543 -

4a.1.5.21 TB6-1 - 109 19 5 - 131 80 344 742 - - - 119 20 6 162 87 394 28,239 1,832 -

4a.1.5.22 TB6-2 - 128 26 7 - 202 - 111 474 1,148 - - - 139 28 9 251 120 547 43,543 2,166 -

4a.1.5.23 YARD - 2 - - 1 2 - 2 - - - - 1 2 - 31 -

4a.1.5.24 YD1-1 clean area - 15 - - 5 20 - - 17 - - - 5 22 - 278 -

4a.1.5 Totals - 4,719 654 182 5,462 - 3,390 14,406 28,591 - 5,121 710 226 6,785 3,678 16,519 1,082,122 79,898 -

4a.1.6 Scaffolding in support of decommissioning - 151 4 0 10 6 - 53 225 20 164 4 0 13 8 - 58 247 5,967 825 -

4a.1 Subtotal Period 4a Activity Costs 55 5,932 1,664 346 10 10,495 415 5,675 24,593 48,622 - - 60 6,437 1,806 430 13 13,037 451 6,158 28,392 1,857,788 87,060 -

Period 4a Additional Costs 4a.2.1 Modifications Supporting Access for Equipment Removal - - - 170 33 203 - - - - 184 36 220 - - -

4a.2.2 Activation Analysis of Reactor - - - - - - 80 20 100 - - - - - - - - 87 22 109 - - -

Subtotal Period 4a Additional Costs - - 250 53 303 - - - - 271 57 328 - - -

Period 4a Collateral Costs 4a.3.1 Process liquid waste 15 - 8 34 - 26 26 108 104 - 17 - 8 42 33 28 127 6,251 27 -

4a.3.2 Small tool allowance - 93 - - 30 123 - - 101 - - - - - 33 134 - - -

4a.3 Subtotal Period 4a Collateral Costs 15 93 8 34 - 26 - 56 232 104 - - 17 101 8 42 33 - 60 261 6,251 27 -

Period 4a Period-Dependent Costs 4a.4.1 Decon supplies 117 - - 37 154 - - 127 - - - 41 167 - - -

4a.4.2 Insurance - - - 162 21 183 - - - 176 23 199 - - -

4a.4.3 Property taxes - - - - - - - - - - - - - - - - - - - -

4a.4.4 Health physics supplies - 2,385 - - - - 766 3,152 - - - - 2,588 - - - - 832 3,420 - - -

4a.4.5 Heavy equipment rental 1,268 - - 407 1,675 - - 1,376 - 442 1,818 - -

4a.4.6 Disposal of DAW generated 8 3 - 844 - 273 1,128 3,349 - - - 9 4 - 1,048 - 296 1,358 66,974 22 -

4a.4.7 Plant energy budget - - 459 89 548 - - - - - - 498 96 595 - -

4a.4.8 NRC Fees 1,316 169 1,485 - - 1,428 184 1,612 - - -

4a.4.9 Emergency Planning Fees - 202 26 228 - - - - - - 219 28 247 - -

4a.4.10 Environmental! Engineering Support - - 7,273 1,402 8,675 - - - - - - - 7,892 1,521 9,413 - -

4a.4.11 ISFSI Operating Costs 170 33 203 - - - - - - 184 36 220 - -

4a.4.12 Security Staff Cost - - - 7,182 1,384 8,567 - - - - 7,794 1,502 9,296 - - 133,486 4a.4.13 DOC Staff Cost - - - 21,109 4,069 25,177 - - - - - - 22,905 4,415 27,320 - 251,787 4a.4.14 Utility Staff Cost - - 12,325 2,376 14,700 - - - - - - 13,374 2,578 15,951 - 213,619 4a.4 Subtotal Period 4a Period-Dependent Costs 117 3,653 8 3 - 844 50,198 11,052 65,875 3,349 - 127 3,964 9 4 - 1,048 54,471 11,992 71,616 66,974 22 598,892 4a.0 TOTAL PERIOD 4a COST 187 9,679 1,680 383 10 11,365 50,863 16,835 91,003 52,075 - 203 10,503 1,823 476 13 14,118 55,193 18,268 100,597 1,931,014 87,108 598,892 PERIOD 4b - Reactor Vessel Removal Period 4b Direct Decommissioning Activities - - - - -

Nuclear Steam Supply System Removal 4b.1.1.1 CRDMs & Nls Removal 4 31 104 20 202 95 456 913 - - 5 33 113 25 251 103 530 24,050 628 -

4b.1.1.2 IReactor Vessel Internals 13 1,774 1,656 384 - 1,497 119 3,358 8,802 506 470 14 1,925 1,797 477 1,859 129 3,644 9,846 60,589 13,200 660

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY-AREA ESTIMATE Page 3 of 7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off-Site LLRW Off-Site LLRW Burial I Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B Class C GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt., Lbs. Manhours Manhours 4b.l.l.3 Reactor Vessel 2 4,098 536 132 7,966 119 9.306 22.158 381 2,699 - - 2 4,447 581 164 - 9.896 129 10,098 25.317 298.310 13.200 660 4b.l.l Totals 20 5,903 2,296 536 - 9.664 238 12.759 31.416 1.800 2,699 470 - 21 6,406 2,491 666 - 12.006 258 13.845 35.693 382.950 27.028 1.320 Disposal of Plant Systems 4b.l.2.1 RB2-7 306 28 6 - 108 138 585 904 - - - 332 30 7 - 134 - 149 653 34,459 5.136 4b.l.2.2 RB2-8 115 269 62 21 - 203 237 906 3.267 - - - 125 291 67 26 - 252 - 257 1.018 123.326 6.053 4b.l.2.3 RB2-9 115 267 59 20 - 192 233 886 3.104 - - 125 290 64 24 - 239 253 994 117.173 6.249 4b.l.2.4 RW1-1 265 27 7 283 181 764 1.124 - - 288 30 9 - 352 196 875 42,705 4.503 4b.l.2.5 RWl-2 269 54 16 - 161 148 648 2.604 - - 292 59 19 - 201 161 731 92.757 4.611 -

4b.l.2.6 RWl-3 5 1 0 - 8 4 19 34 - - 6 1 0 - 10 5 21 1.303 87 -

4b.l.2.7 RWl-4 122 15 4 - 173 98 412 741 - - - 133 16 5 - 214 106 475 26.242 2.124 -

4b.1.2.8 RWl-5 108 11 3 140 82 343 554 - - - 117 12 4 - 173 88 395 19,650 1.875 -

4b.l.2.9 RWl-6 49 14 4 - 44 32 144 708 - - - - 53 15 6 - 55 - 35 164 26.687 784 -

4b.l.2.10 RWl-7 19 5 1 11 - 10 47 172 - - - - 21 5 1 - 13 11 52 6.568 295 4b.l.2.11 RWl-8 5 1 0 2 3 11 34 - - 6 1 0 - 3 - 3 12 1.311 83 4b.l.2.12 RWl-9 - 4 0 0 - 1 2 7 17 - - - - 4 0 0 - 1 - 2 8 626 69 4b.l.2.13 RWP - 178 - - 57 235 - - - - - 193 - - 62 255 - 3.080 4b.l.2 Totals 230 1.867 277 83 - 1.325 1.225 5.006 13.264 - 249 2.026 300 103 - 1.646 - 1.329 5.653 492.806 34,951 -

4b.l.3 Scaffolding in support of decommissioning - 189 5 0 13 8 66 281 25 - - 205 5 0 16 10 - 72 309 7,458 1,031 -

4b.l Subtotal Period 4b Activity Costs 249 7,959 2.577 619 13 10.998 238 14,050 36,703 15.089 2,699 470 - 271 8,637 2.797 769 16 13.662 258 15.246 41.655 883,214 63.010 1.320 Period 4b Additional Costs 4b.2.1 Discharge Piping 50 21 9 36 - 144 - 94 354 2,361 - - 55 23 10 45 - 179 - 102 413 165.240 811 -

4b.2.2 Asbestos Removal - - 285 55 340 - - - - - - - - - 309 60 369 -

4b.2.3 Expand Waste Packaging Laydown Area - - - - 136 26 162 - - - - - - - - - 147 28 176 -

4b.2 Subtotal Period 4b Additional Costs 50 21 9 36 144 421 175 856 2,361 - 55 23 10 45 - 179 457 190 957 165,240 811 Period 4b Collateral Costs 4b.3.1 Process liquid waste 31 - 15 68 - 53 - 52 218 210 - - 33 - 16 84 - 66 - 56 256 12,581 55 4b.3.2 Small tool allowance - 73 - - - - 23 96 - - - - 79 - - - 25 104 - -

4b.3 Subtotal Period 4b Collateral Costs 31 73 15 68 53 - 75 314 210 - 33 79 16 84 - 66 - 81 360 12,581 55 -

Period 4b Period-Dependent Costs 4b.4.1 Decon supplies 475 - - 153 628 - - 516 - - - - - - 166 681 - -

4b.4.2 Insurance 122 16 138 - - - - - - - - - 132 17 150 - -

4b.4.3 Property taxes - - - - - - - - - - - - - - - - -

4b.4.4 Health physics supplies - 1,822 - - 585 2,407 - - - - 1,977 - - - - 635 2.612 - -

4b.4.5 Heavy equipment rental - 2,261 - 726 2,988 - - - - 2,454 - - - - - 788 3.242 - -

4b.4.6 Disposal of DAW generated 6 3 652 - 211 872 2,587 - - - 7 3 810 - 229 1,049 51,732 17 4b.4.7 Plant energy budget - - 273 53 325 - - - - - - - - - 296 57 353 - - -

4b.4.8 NRC Fees - - - - 990 127 1,117 - - - - - - - - 1.074 138 1.212 - - -

4b.4.9 Emergency Planning Fees - - - 152 20 171 - - - - - - 165 21 186 - -

4b.4.10 Environmental I Engineering Support - - - 4.225 814 5,039 - - - - - - - 4,584 884 5,468 - - -

4b.4.11 Radwaste Processing Equipment/Services - - - 564 109 673 - - - - - - - - - 612 118 730 - - -

4b.4.12 ISFSI Operating Costs - - - 128 25 152 - - - - - - - - 139 27 165 - - -

4b.4.13 Security Staff Cost - - - 5.387 1,038 6,425 - - - - - - - 5,846 1,127 6.972 - - 100.389 4b.4.14 DOC Staff Cost - - 14.641 2.822 17,463 - - - - - - - 15.887 3.062 18.949 - - 177.845 4b.4.15 Utility Staff Cost - 9,835 1,896 11,731 - - - - - - 10,673 2.057 12.730 - - 168.370 4b.4 Subtotal Period 4b Period-Dependent Costs 475 4,083 6 3 - 652 36,316 8,594 50,129 2,587 - - 516 4,430 7 3 810 39,407 9,325 54,499 51,732 17 446.604 4b.0 TOTAL PERIOD 4b COST 806 12,136 2,608 725 13 11.847 36.975 22,894 88.003 20.246 2.699 470 - 874 13.169 2.830 900 16 14,717 40.122 24.843 97,471 1.112.768 63.892 447.924 PERIOD 4c - Prepare Buildings for Demolition Period 4c Direct Decommissioning Activities Disposal of Plant Systems 4c.1.1.1 HMS1-l 36 8 3 - 34 - 24 105 419 - - 39 9 3 42 - 26 119 15.816 601 4c.l.1.2 HMSl-2 5 3 1 - 9 - 5 24 152 - - - 6 3 1 12 - 6 28 5.726 96 4c.1.1.3 HMSP 6 1 0 - 2 3 12 34 - 7 1 0 3 - 3 13 1.275 99 4c.l.l.4 OTS-l 6 - - 2 7 - - 6 - - - - 2 8 - 101 -

4c.l.l.5 OTS-2 6 - - 2 8 - - - 6 - - - - 2 8 - 102 4c.l.l.6 OTS-3 7 - - 2 10 - - 8 - - - - 3 11 - 132 -

4c.l.l.7 OTS-4 - 6 - - - 2 8 - - - - 6 - - - - 2 8 - 103 -

4c.l.1.8 OTS-5 - 25 3 1 - 21 - 15 65 84 - - - 27 3 1 26 - 17 74 3.217 418 -

4c.l.l.9 OTS-6 - 1 - - 0 1 - - - - 1 - - - 0 1 - 13 -

4c.l.l.10 RB1-l 88 8 2 - 91 59 248 361 95 9 3 113 - 64 284 13.723 1.508 4c.l.1.11 RBl-2 32 3 1 - 29 - 20 85 116 - - - 35 3 1 36 - 22 97 4,417 544 -

4c.l.1.12 RBl-3 - 21 2 1 - 7 - 9 40 106 - 23 2 1 8 - 10 44 4.001 368 -

4c.l.1.13 RBl-4 116 14 4 - 50 - 56 239 611 - - 126 16 5 61 - 60 268 23.199 1.990 4c.1.1.14 RBl-5 127 16 4 - 44 - 58 249 711 - 138 17 5 55 - 63 277 26.146 2.170 -

4c.l.1.15 RBl-6 52 211 20 6 - 228 - 178 695 907 - - 57 229 22 7 284 - 193 791 34.362 4.245 4c.1.1.16 RB3-2 - 15 3 1 - 22 - 12 53 93 - - - 16 3 1 27 - 13 61 3,566 265 4c.l.l.17 RB4-2 62 7 2 - 76 - 46 193 325 - - 68 7 2 - 94 - 50 221 11.592 1.082 4c.l.1.18 RB5-1 - 23 3 1 - 9 - 11 47 148 - - - - 25 3 1 11 - 12 53 5.513 381 4c.l.l.19 RB5-1 (HVAC Scope) - 22 9 3 - 29 18 80 467 - - 23 10 4 36 - 19 92 17,640 319

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY-AREA ESTIMATE Page 4 of 7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off*Site LLRW Off*Site LLRW Burial! Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B Class C GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs WI., Lbs. Manhours Manhours 4c.1.1.20 RBP 23 199 2 2 8 82 315 135 . - - 25 215 2 2 - 10 - 89 344 9,465 2,710 4c.1.1.21 TB7-1 - 59 19 78 - - - 64 - - - - - 21 85 - 1,067 4c.1.1.22 TB7*2 9 - - - 3 13 - - - - 10 - - - 3 14 - 171 4c.1.1.23 TB7*3 11 4 1 - 13 9 38 209 - - - 12 4 2 - 16 - 9 43 7,906 161 4c.1.1.24 TB7-4 13 0 - 3 - 28 - - - 14 1 - 3 - 5 23 1,040 227 4c.1.1.25 TB7-5 27 1

8 2 - 11 -

5 13 21 61 348 - - - 29 8 ° 3 - 13 15 68 13,169 427 4c.1.1.26 TB7-6 39 10 3 - 100 - 47 199 514 - - 42 11 4 - 125 - 51 233 19,435 587 Disposal of Plant Systems (continued) - - - - - - - -

4c.1.1.27 TB7-7 13 - - 4 18 - - - 14 - - 5 19 240 4c.1.1.28 TBP 1,000 - - 321 1,322 - - 1,086 - - - - 349 1,434 17,317 4c.1.1.29 YD1-2 - 7 2 1 - 31 - 13 55 124 - - 8 3 1 - 39 14 64 4,692 104 -

4c.1.1.30 YD1-5 9 2 1 - 7 - 6 25 114 - - 10 2 1 - 9 6 28 4,272 138 4c.1.1.31 YD2*1 - 56 4 1 - 14 - 23 98 168 - - 61 5 1 - 17 25 108 6,375 947 4c.1.1.32 YD2-2 19 3 1 - 8 - 9 40 133 - 20 3 1 - 10 10 45 5,024 302 -

4c.1.1.33 YD2-3 8 2 .1 - 9 6 26 111 - 9 3 1 - 11 6 29 4,197 125 -

4c.1.1.34 YD2-4 - 116 30 8 - 351 - 156 661 1,394 - 126 32 10 - 436 169 774 49,592 1,994 4c.1.1.35 YD2-5 - 253 46 15 - 585 - 278 1,176 2,320 - - 275 50 18 - 726 302 1,371 87,642 4,102 4c.1.1.36 YD2-6 185 28 9 - 350 - 177 750 1,390 - - 201 30 11 - 435 193 870 52,552 2,693 -

4c.1.1.37 YDP 178 17 5 - 54 - 78 331 864 - - - 193 18 6 - 67 84 369 31,068 1,875 -

4c.1.1 Totals 76 3,016 258 78 - 2,195 - 1,771 7,393 12,387 - - 82 3,273 280 97 - 2,726 - 1,921 8,380 466,620 49,727 -

4c.1.2 Scaffolding in support of decommissioning - 38 1 3 - 13 56 5 - - 41 1 3 2 14 62 1,492 206 -

° 2

° Decontamination of Site Buildings 4c.1.3.1 HMS 57 6 4 - 18 - 25 110 281 - - - 62 6 5 - 22 28 122 19,674 821 -

4c.1.3.2 Hot Machine Shop & Calibration 3 1 - 9 - 4 18 48 - - 4 1 - 11 - 5 21 2,015 55 -

4c.1.3.3 RBi 91 1,748 542 180° - 3,807 - 1,948 8,317 18,660 - - 99 1.897 589 224° - 4,730 - 2,113 9,652 989,526 29,415 -

4c.1.3.4 RB2 - 3,120 207 49 - 1,693 - 1,582 6,651 6,249 - - 3,385 225 61 - 2,103 - 1,717 7,491 280,809 54,462 -

4c.1.3.5 RB3 99 7 3 - 54 - 51 214 328 - - 108 7 4 - 67 - 55 241 17,949 1,484 -

4c.1.3.6 RB4 81 7 3 - 54 - 45 191 336 - 88 7 4 - 68 - 49 216 18,543 1,206 -

4c.1.3.7 RB5-1 (Refuel Bldg Roof) 19 4 3 12 - 11 47 190 - 20 4 3 - 15 - 12 54 13,290 254 4c.1.3.8 RW1 - 534 166 44 - 1,289 616 2,649 5,192 - 580 180 55 - 1,601 - 668 3,084 247,927 7,988 4c.1.3.9 Refueling - 3 4 1 - 46 16 70 190 - - 3 4 1 - 57 - 18 83 5,487 53 4c.1.3.10 TB1 93 8 5 46 47 198 417 - 101 9 6 - 57 - 50 223 26,269 1,356 4c.1.3.11 TB2 - 122 11 7 47 - 57 244 538 - - - 133 12 8 - 58 - 62 273 35,623 1,775 4c.1.3.12 TB3 30 6 4 25 - 19 84 293 - - 33 6 5 - 31 - 21 96 19,550 423 4c.1.3.13 TB4 - 203 11 6 - 73 91 385 565 - - - 221 12 8 - 90 - 99 430 33,971 3,005 -

4c.1.3.14 TB5 87 4 3 13 - 33 140 209 - - - 94 5 3 - 16 - 36 154 14,628 1,270 4c.1.3.15 TB6 76 4 3 12 - 29 124 196 - - - 82 4 3 - 15 - 32 136 13,698 1,106 4c.1.3.16 TB7 - 31 6 4 - 20 18 79 313 - - - 33 7 5 - 24 - 19 89 21,936 423 4c.1.3.17 Turbine - 4 4 1 - 54 20 83 223 - - - 5 5 1 - 67 - 21 99 6,442 76 4c.1.3.18 YD1 24 3 2 8 11 47 129 - - - - 26 3 2 - 10 - 12 53 9,054 343 -

4c.1.3.19 YD2 - 98 12 8 36 - 46 200 582 - - - 107 13 10 - 45 - 50 224 40,746 1,403 4c.1.3 Totals 91 6,434 1,012 330 7,315 4,669 19,851 34,940 - - 99 6,981 1,098 410 - 9,088 - 5,066 22,742 1,817,136 106,919 4c.1 Activity Costs 166 9,487 1,271 409 3 9,511 6,453 27,300 47,332 - 181 10,295 1,379 508 3 11,816 - 7,002 31,184 2,285,247 156,852 Period 4c Additional Costs 4c.2.1 Contaminated Soil Removal 211 663 2,567 14,035 5,157 22,633 169,154 11,840,787 2,684 4c.2.2 Replacement of Drains and Catch Basins - 75 - 24 99 - - - 82 - - - 26 108 687 -

4c.2.3 Caisson Mixed Waste Removal - 159 10 40 - 1,175 438 1,822 2,433 - - 173 11 50 - 1,459 - 475 2,168 170,284 2,117 -

4c.2.4 Site work supporting spent fuel pool removal - 990 191 1,180 - - - - - - - - - 1,074 207 1,281 507 4c.2.5 Removal of 3 spent fuel pool walls - 704 68 418 - 3,479 - 1,433 6,101 24,120 - - 764 73 519 4,322 - 1,555 7,233 2,210,400 49,551 4c.2.6 Removal of Yard Pipe Tunnel - 647 14 205 - 2,561 - 1,072 4,498 10,162 - - 702 15 254 - 3,181 - 1,163 5,315 1,219,420 24,962 4c.2.7 Contaminated Soil & Concrete Storage Facility - - - - 436 84 520 - - - - - - 473 91 564 476 -

4c.2 Total 1,796 754 3,230 21,250 1,425 8,398 36,854 205,$69 1,949 819 4,012 26,399 1,547 9,113 43,838 15,440,890 80,983 Period 4c Collateral Costs 4c.3.1 Process liquid waste 28 - 14 61 - 48 47 197 189 30 - 15 76 - 59 - 51 231 11,354 49 4c.3.2 Small tool allowance 179 - - - - 58 237 - - 195 - - - - - 62 257 -

4c.3.3 Decommissioning Equipment Disposition - 206 7 540 335 240 1,328 1,058 - - 224 8 671 417 - 260 1,580 309,936 123 4c.3 Subtotal Period 4c Collateral Costs 28 179 220 68 540 383 344 1,762 1,247 - 30 195 239 84 671 476 - 373 2,068 321,290 173 Period 4c Period.Dependent Costs 4c.4.1 Decon supplies 58 - 19 77 - - 63 - - - 20 84 - -

4c.4.2 Insurance - - 72 9 81 - - - - - - 78 10 88 -

4c.4.3 Property taxes - - - - - - - - - - - - -

4c.4.4 Health physics supplies - 624 - - - - 200 824 - 677 - - - - - 218 895 -

4c.4.5 Heavy equipment rental - 1,503 - - - 290 1,793 - 1,631 314 1,946 Period 4c Period*Dependent Costs (continued) 4c.4.6 Disposal of DAW generated - 1 1 - 134 - 43 179 533 - - 1 1 - 167 - 47 216 10,651 3 4c.4.7 Plant energy budget - 97 19 115 - 105 20 125 -

4c.4.8 NRC Fees - - 658 85 743 - - - - - 714 92 806 -

4c.4.9 Emergency Planning Fees - - - - 101 13 114 - - - - - - - 110 14 124 -

4c.4.10 Environmental I Engineering Support - - 2,648 510 3,159 - - - 2,874 554 3,428 4c.4.11 Radwaste Processing Equipment/Services - - 375 72 447 - - - - - - 407 78 485 4c.4.12 ISFSI Operating Costs - - - 85 16 101 - - - - - 92 18 110 -

4c.4.13 Security Staff Cost - 3,591 692 4,283 - - - - 3,897 751 4,648 66,743 4c.4.14 DOC Staff Cost - - - 9,559 1,843 11,402 - - - - - 10,373 1,999 12,372 119,282 4c.4.15 Utility Staff Cost - 6,662 1,284 7,946 - - - - - - - 7,229 1,393 8,622 - - 115,757

Humboldt Bay Power Plant Unit 3 Enclosure 3 Humboldt Bay Power Plant, Unit 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY-AREA ESTIMATE Page 5 of 7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off-Site LLRW Off-Site LLRW Burial! Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B Class C GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt..Lbs. Manhours Manhours 4cA Subtotal Period 4c Period-Dependent Costs 58 2,127 1 1 134 23,848 5,096 31,265 533 - - 63 2,308 1 1 167 25,878 5,529 33,948 10,651 3 301,782 4c.O TOTAL PERIOD 4c COST 252 13,590 2,247 3,707 543 31,279 25,274 20,290 97,181 254,980 - 274 14,747 2,438 4,605 674 38,858 27,425 22,017 111,038 18,058,079 238,011 301,782 PERIOD 4d - Building Demolition, Yard Work, Soil Remediation Demolition of Site Buildings 4d.1.1 Contaminated Equipment Storage 7 10 42 174 44 278 2,842 - - 8 11 52 - 216 48 335 198,936 90 4d.1.2 Gas Stack - 33 82 331 - 1,381 - 347 2,175 22,563 - - 36 89 412 - 1,715 377 2,629 1,579,419 184 -

4d.1.3 Hot Machine Shop & Calibration - 20 24 95 - 394 - 101 634 6,445 - - 22 26 118 490 110 765 451,120 252 4d.1A New Off Gas Vault 80 189 759 - 3,163 - 796 4,987 51,687 - - 87 205 943 3,930 863 6,028 3,618,076 460 -

4d.1.5 Radwaste Treatment - 145 149 597 - 2,490 642 4,023 40,680 - - 157 161 742 - 3,093 - 697 4,850 2,847,575 1,322 -

4d.1.6 Refueling - 1,099 310 1,247 - 5,196 1,494 9,346 84,907 - - - - 1,192 337 1,549 6,455 - 1,621 11,154 5,943,511 3,112 4d.1.7 Solid Waste Vault - 4 6 23 - 96 24 153 1,572 - - - 4 6 29 - 120 - 27 185 110,067 30 4d.1.8 Turbine - 243 389 1,565 - 6,522 1,656 10,375 106,576 - - 263 422 1,944 8,103 - 1,797 12,530 7,460,292 1,674 4d.1.9 Yard Structures - 57 36 143 - 598 - 158 992 9,765 - - 62 39 178 - 742 - 172 1,193 683,540 647 4d.l ITotals - 1,687 1,195 4,803 - 20,015 - 5,262 32,962 327,036 - 1,831 1,296 5,967 - 24,864 - 5,710 39,668 22,892,536 7,770 I

Period 4d Additional Costs 4d.2.1 Backfill of Structures and Site - 1,460 - - - 281 1,741 - 1,584 - - 305 1,890 -

4d.2 I Subtotal Period 4c Additional Costs - 1,460 - - - 281 1,741 - - - 1,584 - - - - 305 1,890 -

Period 4d Collateral Costs 4d.3.1 Small Tool Allowance 9 - - 2 11 ISubtotal Period 4d Collateral Costs - 9 - - - 2 11 - 10 - - - - 2 11 - -

Period 4d Period-Dependent Costs 4dA.l Insurance - - - - - 138 18 155 - - - - - - - 149 19 168 - - -

4dA.2 Property taxes - - - - - - - - -

4dA.3 Health phYSics supplies - 441 - - 142 582 - - 478 - - - 154 632 - -

4dAA Heavy equipment rental - 925 - - - - 178 1,104 - - - 1,004 - - - - 194 1,198 - -

4dA.5 Disposal of DAW generated - - 1 0 - 98 - 32 131 390 - - 1 0 122 34 158 7,793 3 -

4dA.6 Plant energy budget - - - - 150 29 179 - - - - - 163 31 194 - -

4dA.7 NRC Fees - - - 350 45 395 - - - - - - 380 49 429 - - -

4d.4.8 Emergency Planning Fees - - 194 25 218 - - 210 27 237 - -

4dA.9 Environmental/Engineering Support - - - - - 3,137 605 3,742 - - - - - - 3,405 656 4,061 - - -

4dA.l0 Radwaste Processing Equipment/Services - - - - 719 139 858 - - - - - 781 150 931 - -

4dA.11 ISFSI Operating Costs - - 163 31 194 - - - - - 177 34 211 - -

4dA.12 Security Staff Cost - - - 6,079 1,172 7,251 - - - - - 6,596 1,271 7,868 - 116,520 4dA.13 DOC Staff Cost - - - - 14,518 2,798 17,316 - - - - - 15,754 3,037 18,790 - 194,800 4dA.14 Utility Staff Cost - - - - 10,603 2,044 12,647 - - - - - 11,505 2,218 13,723 - 176,920 Subtotal Period 4d Period-Dependent Costs - 1,366 1 0 - 98 36,051 7,257 44,773 390 - - 1,482 1 0 122 39,119 7,874 48,599 7,793 3 488,240 4d.0 TOTAL PERIOD 4d COST - 4,522 1,196 4,803 - 20,113 36,051 12,802 79,486 327,426 - - 4,907 1,298 5,967 24,986 39,119 13,892 90,169 22,900,330 7,773 488,240 PERIOD 4e - License Termination Period 4e Direct Decommissioning Activities 4e.1.1 ORISE confirmatory survey - - - 151 29 180 - - - - - - - 164 32 195 - - -

4e.l.2 Terminate license - - - - - - - - - - - - - - - - - -

4e.l Subtotal Period 4e Activity Costs - - - - - 151 29 180 - - - - - - 164 32 195 - - -

Period 4e Additional Costs 4e.2.1 ILicense Termination Survey (sample analysis & equipment) - - - 725 279 1,004 - - - - - - - 787 303 1,090 - - -

4e.2 Subtotal Period 4e Additional Costs - - - 725 279 1,004 - - - - - - 787 303 1,090 - - -

Period 4e Collateral Costs 4e.3.1 IDOC staff relocation expenses - - - - 1,436 277 1,713 - - - - - 1,559 300 1,859 - - -

4e.3 Subtotal Period 4e Collateral Costs - - 1,436 277 1,713 - - - - - - 1,559 300 1,859 - - -

Period 4e Period-Dependent Costs 4eA.1 Insurance 24 3 27 - - - - - - 26 3 29 - -

4e.4.2 Property taxes - - - - - - - - - - - - - - - -

4eA.3 Health physics supplies 192 - - - 62 254 - - - 209 - - - - 67 276 -

4eAA Disposal of DAW generated - 0 0 38 - 12 51 152 - - - 0 0 - 48 13 62 3,036 1 4eA.5 Plant energy budget - - - - 16 3 19 - - - - - - 18 3 21 -

4eA.6 NRC Fees - - 236 30 266 - - - - - - 256 33 289 -

4eA.7 Emergency Planning Fees - - 34 4 38 - - - - - - 37 5 41 - -

4eA.8 Environmental/Engineering Support - - - - - - 443 85 528 - - - - - 481 93 573 -

4eA.9 ISFSI Operating Costs - - - 28 5 34 - - - - - - 31 6 37 -

4eA.10 Security Staff Cost - 948 183 1,131 - - - - - - - - 1,029 198 1,227 - 18,126 4eA.l1 DOC Staff Cost - - - - - 2,128 410 2,538 - - - - - 2,309 445 2,754 - 28,757 4eA.12 Utility Staff Cost - - - - 1,457 281 1,737 - - - - - - - 1,581 305 1,885 - 22,831 4eA Subtotal Period 4e Period-Dependent Costs 192 0 0 38 5,314 1,080 6,624 152 - - - - 209 0 0 - 48 5,766 1,171 7,194 3,036 1 69,714 4e.0 TOTAL PERIOD 4e COST - 192 0 0 38 7,626 1,665 9,522 152 - - - 209 0 0 - 48 8,275 1,807 10,339 3,036 1 69,714 PERIOD 4 TOTALS 1,246 40,119 7,731 9,618 566 74,641 156,788 74,487 365,195 654,879 2,699 470 - 1,352 43,534 8,389 11,948 703 92,727 170,134 80,827 409,613 44,005,225 396,785 1,906,552

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 AREA-BY-AREA ESTIMATE Page 6 of 7 TLG Services, Inc., Appendix D Thousands of 2008 Dollars Thousands of 2011 Dollars Off-Site LLRW Off-Site LLRW Burial I Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B ClassC GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt., Lbs. Manhours Manhours I

PERIOD 5b - Site Restoration Period 5b Direct Decommissioning Activities Site Closeout Activities 5b.1.1 Grade & landscape site - 41 - - 13 55 - - - - - 45 - - - - - 14 59 105 5b.1.2 Final report to NRC - - - 195 38 233 - - - - - - - 212 41 252 - 1,560 5b.1 Subtotal Period 5b Activity Costs - 41 - - - 195 51 287 - - 45 - - - - 212 55 312 105 1,560 Period 5b Additional Costs 5b.2.1 Disposal of Asphalt Roadways - - - 63 12 75 - - 68 13 81 5b.2.2 Disposal of Legacy Class B & C Waste - 148 1,400 - 478 2,026 - 384 96 - - - 183 - 1,739 - 519 2,441 14,050 - -

5b.2.3 Disposal of Intermodal Containers - - - 975 188 1,163 - - - - 1,058 204 1,262 5b.2 Subtotal Period 5b Additional Costs - - 148 1,400 1,038 678 3,264 384 96 - - - - 183 - 1,739 1,126 736 3,785 14,050 - -

Period 5b Collateral Costs 5b.3.1 ISmail tool allowance - 0 - 0 0 - - - - - 0 - - - - - 0 0 - -

5b.3 Subtotal Period 5b Collateral Costs - 0 - - 0 0 - - - - 0 - - - - - 0 0 - - -

I Period 5b Period-Dependent Costs 5bA.1 Insurance - - - - - 36 5 40 - - - - - - - 39 5 44 - - -

5bA.2 Property taxes - - - - - - - - - - - - - - - - - - -

5bA.3 Plant energy budget - - - - 12 2 14 - - - - - - - 13 3 16 - - -

5bAA NRC ISFSI Fees - - - - 98 13 111 - - - - - - - 106 14 120 - - -

5bA.5 Emergency Planning Fees - - - - 50 6 57 - - - - - - - 55 7 62 - - -

5b.4.6 ISFSI Operating Costs - 42 8 50 - - - - - - - 46 9 55 - - -

5bA.7 Security Staff Cost - - - 1,422 274 1,696 - - - - - - - - 1,543 297 1,840 - - 27,040 5bA.8 DOC Staff Cost - - - - 127 24 152 - - - - - - - - - 138 27 164 - - 1,300 Period 5b Period-Dependent Costs (continued) - - - - - - -

5bA.9 Utility Staff Cost - - - 428 83 511 - - - - - - - 465 90 554 - - 7,540 5bA Subtotal Period 5b Period-Dependent Costs - - - - 2,215 415 2,631 - - - - - - - - 2,404 451 2,855 - 35,880 5b.0 TOTAL PERIOD 5b COST - 41 148 1,400 3,448 1,144 6,182 - 384 96 - 45 - 183 - 1,739 3,742 1,242 6,951 14,050 105 37,440 PERIOD 5c - Fuel Storage Operations Period 5c Period-Dependent Costs 5cA.1 Insurance - - - 251 32 284 - - - - - - - - 273 35 308 - -

5cA.2 Property taxes - - - - - - - - - - - - - - - - -

5cA.3 Plant energy budget - - - - - - - - - - - -

5cAA NRC ISFSI Fees - - - - 709 91 801 - - - - - - 770 99 869 - -

5c.4.5 Emergency Planning Fees - - - - 354 45 399 - - - - - - 384 49 433 - - -

5cA.6 ISFSI Operating Costs - - 297 57 355 - - - - - 323 62 385 - -

5cA.7 Security Staff Cost - - - 9,998 1,927 11,925 - - - - - 10,849 2,091 12,941 - 190,023 5cA.8 DOC Staff Cost - - - - - 198 38 236 - - - - - - 215 41 257 - 1,827 5cA.9 Utility Staff Cost - - - - 1,087 210 1,297 - - - - - - - 1,180 227 1,407 - 14,617 5cA Subtotal Period 5c Period-Dependent Costs - - - 12,896 2,401 15,297 - - - - - 13,993 2,606 16,599 - 206,467 5c.0 TOTAL PERIOD 5c COST - - - 12,896 2,401 15,297 - - - 206,467 PERIOD 5d - Spent Fuel and GTCC shipping Period 5d Direct Decommissioning Activities Nuclear Steam Supply System Removal 5d.1.1.1 Vessel & Internals GTCC Disposal - 95 - 346 - 79 519 - - 17 - - 103 429 86 618 3,228 -

5d.1 Subtotal Period 5d Activity Costs - 95 - 346 - 79 519 - - 17 - - 103 - 429 86 618 3,228 -

Period 5d Collateral Costs 5d.3.1 ITransfer Spent Fuel to DOE - - - - - 462 89 551 - - - - -

5d.3.1 Subtotal Period 5d Collateral Costs - - 462 89 551 - -

I Period 5d Period-Dependent Costs 5dA.1 Insurance - - - 36 7 43 - - - - - - 39 8 47 5dA.2 Property taxes - - - - - - - - - - - - - -

5dA.3 Plant energy budget - - - - - - - - - - - - - - - -

5dAA NRC ISFSI Fees - - - - 99 13 111 - - - - 107 14 121 -

5dA.5 Emergency Planning Fees - - - - - 51 7 57 - - - - - 55 7 62 - -

5dA.6 ISFSI Operating Costs - - - 43 8 51 - - - - - 46 9 55 - -

5dA.7 Security Staff Cost - - - - - 1,430 276 1,705 - - - - - 1,551 299 1,850 -

5d.4.8 DOC Staff Cost - - - 28 5 34 - - - - - - - - 31 6 37 -

5dA.9 Utility Staff Cost - - - 156 30 186 - - - - - - 169 33 201 - 2,091 5dA. Subtotal Period 5d Period-Dependent Costs - - - 1,841 345 2,187 - - - - - - - 1,998 375 2,373 2,091 5d.0 TOTAL PERIOD 5d COST - 95 - - 346 2,303 513 3,257 - - 17 - - 103 - 429 2,499 557 3,588 3,228 - 2,091 PERIOD 5e - ISFSI Decontamination

Humboldt Bay Power Plant Unit 3 Humboldt Bay Power Plant, Unit 3 Enclosure 3 Decommissioning Cost Study PG&E Letter HBL-11-003 TLG Services, Inc., Appendix D AREA-BY -AREA ESTIMATE Page 7 of 7 Thousands of 2008 Dollars Thousands of 2011 Dollars Off-Site LLRW Off-Site LLRW Burial I Utility and Activity Decon Removal Packaging Transport Processing Disposal Other Total Total Class A Class B Class C GTCC Decon Removal Packaging Transport Processing Disposal Other Total Total Processed Craft Contractor Index Activity Description Cost Cost Costs Costs Costs Costs Costs Contingency Costs Cu. Feet Cu. Feet Cu. Feet Cu. Feet Cost Cost Costs Costs Costs Costs Costs Contingency Costs Wt., lbs. Manhours Manhours I

Period 5e Additional Costs Se.2.1 ISFSI Decontamination - S 0 2 - 10 1,169 231 1,417 116 - - - - 6 0 2 - 13 1,268 250 1,539 10,376 1,270 2,S60 Se.2 Subtotal Period 5e Additional Costs - S 0 2 10 1,169 231 1,417 116 - - - - 6 0 2 - 13 1,268 2S0 1,539 10,376 1,270 2,S60 Period 5e Collateral Costs Se.3.1 ISmail tool allowance - 0 - - 0 0 - - - - - 0 - - - - - 0 0 -

Se.3 Subtotal Period 5e Collateral Costs - 0 - 0 0 - - - - - 0 - - - - - 0 0 -

I Period 5e Period-Dependent Costs Se.4.1 Insurance - - - 23 3 26 - - - - - - - - - - 2S 3 29 - -

Se.4.2 Property taxes - - - - - - - - - - - - - - - - - - - - - -

Se.4.3 Heavy equipment rental - 118 - - - 23 141 - - - - 128 - - - - - 25 153 - - -

5e.4.4 Plant energy budget - - - - - - - - - - - - - - - - - - - - -

5e.4.5 Security Staff Cost - - - - 877 169 1,046 - - - - - - - - 9S2 183 1,135 - - 17,680 Se.4.6 DOC Staff Cost - - - - 17 3 21 - - - - - - - 19 4 22 - 170 Se.4.7 Utility Staff Cost - - - - 95 18 114 - - - - - - - - - 103 20 123 - 1,360 Se.4. Subtotal Period 5e Period-Dependent Costs 118 - - 1,013 216 1,347 - - - - 128 - - - - 1,099 235 1,462 - 19,210 Se.O TOTAL PERIOD Se COST - 124 0 2 - 10 2,181 447 2,764 116 - - - - 134 0 2 - 13 2,367 485 3,001 10,376 1,270 21,770 PERIOD 5f -ISFSI Site Restoration Period 5f Additional Costs 5f.2.1 IiSFSI Demolition 270 48 61 380 - - - - 293 - - 52 67 412 - 2,643 160 Sf.2 Subtotal Period 5f Additional Costs - 270 - - - 48 61 380 - - - - - 293 - - S2 67 412 2,643 160 Period 5f Collateral Costs 5f.3.1 ISmail tool allowance - 3 - - - - 1 3 - - - - - 3 - - - 1 4 - - -

5f.3 Subtotal Period Sf Collateral Costs - 3 - - - 1 3 - - - - - 3 - - - - 1 4 - - -

I Period 5f Period-Dependent Costs 5f.4.1 Insurance - - - - - - - - - - - - - - - - - - - - - - -

5f.4.2 Property taxes - - - - - - - - - - - - - - - - - -

5f.4.3 Heavy equipment rental 61 - - 12 73 - - - - - 66 - - - - 13 79 -

Sf.4.4 Plant energy budget - - - - - - - - - - - - - -

Sf.4.S Security Staff Cost - - - - 492 9S S87 - - - - - - - - - - S34 103 637 - 9,360 Sf.4.6 DOC Staff Cost - 10 2 12 - - - - - - - 11 2 13 - - 90 Sf.4.7 Utility Staff Cost - - S4 10 64 - - - - - - - - 58 11 69 - 720 Sf.4 Subtotal Period 5f Period-Dependent Costs 61 - S55 119 735 - - - 66 - - - 603 129 798 10,170 Sf.O TOTAL PERIOD Sf COST 334 - - 604 181 1,119 - - - - 363 - - - 655 196 1,214 - 2,643 10,330 PERIOD 5 TOTALS - 499 95 149 1,756 21,432 4,686 28,618 116 384 96 17 - 542 103 185 - 2,181 23,256 5,085 31,353 27,654 4,019 278,099 TOTAL COST TO DECOMMISSION 2,214 41,837 7,830 9,774 566 76,487 277,452 83,598 499,759 655,237 3,083 566 17 2,403 45,399 8,496 12,142 703 95,020 301,069 90,714 555,946 44,053,592 400,805 2,245,933 TOTAL COST TO DECOMMISSION WITH 25% CONTINGENCY: 499,759 thousands of 2008 dollars TOTAL NRC LICENSE TERMINATION COST IS 84.3% OR 421,241 thousands of 2008 dollars SPENT FUEL MANAGEMENT COST IS 15.3% OR: 76,647 thousands of 2008 dollars NON-NUCLEAR DEMOLITION COST IS 0.4% OR: 1,871 thousands of 2008 dollars TOTAL Class A RADWASTE VOLUME BURIED: 655,237 Cubic Feet TOTAL Class B & C RADWASTE VOLUME BURIED: 3,648 Cubic Feet TOTAL GREATER THAN CLASS C RADWASTE VOLUME GENERATED: 17 Cubic Feet TOTAL CRAFT LABOR REQUIREMENTS: 400,805 Man-hours End Notes:

nfa - indicates that this activity not charged as decommissioning expense.

a - indicates that this activity performed by decommissioning staff.

0- indicates that this value is less than 0.5 but is non-zero.

A cell containing" - " indicates a zero value.

Enclosure 4 PG&E Letter HBL-11-003 Humboldt Bay Power Plant Decommissioning Cash Flow (Estimated in 2011 Dollars)

(1 page)

Humboldt Bay Power Plant Unit 3 Enclosure 4 Decommissioning Cash Flow (Note 1) PG&E Letter HBL-11-003 (Estimated in 2011 Dollars)

ISFSI EngrlLicense Construction Cummulative Trust Account NRC Scope Non-NRC Scope Operation Decommission Funding (Radiological) (Nonradiological) (Note 1) Total Estimate (Note 2)

Year 1996 $1,678,452 $1,678,452 $1,678,452 1997 $8,663,216 $8,663,216 $10,341,669 1998 $5,573,757 $344,408 $5,918,165 $16,259,834 1999 $723,490 $2,281,454 $3,004,944 $19,264,778 2000 $85,241 $2,736,091 $2,821,331 $22,086,109 2001 $89,543 $398,012 $487,555 $22,573,664 2002 $994,127 $113,704 $1,107,831 $23,681,495 2003 $494,838 $2,539,476 $3,034,313 $26,715,809 2004 $491,070 $1,444,628 $1,935,698 $28,651,506 2005 $161,506 $1,671,769 $1,833,274 $30,484,781 2006 $1,073,612 $3,546,617 $4,620,229 $35,105,009 2007 $4,474,247 $9,240,172 $13,714,418 $48,819,428 2008 $12,590,383 $28,485,988 $41,076,371 $89,895,799 2009 $32,901,391 $3,179,956 $36,081,347 $125,977,145 2010 $56,957,494 $5,734,776 $62,692,270 $188,669,415 $188,669,415 2011 $76,343,508 $5,156,500 $81,500,008 $270,169,423 2012 $73,123,800 $4,776,200 $77,900,000 $348,069,423 2013 $81,958,000 $945,300 $4,776,200 $87,679,500 $435,748,923 2014 $41 ,272,700 $945,300 $4,776,200 $46,994,200 $482,743,123 $502,451,875 2015 $36,892,300 $140,600 $4,776,200 $41,809,100 $524,552,223 2016 $4,484,500 $4,776,200 $9,260,700 $533,812,923 2017 $0 $4,776,200 $4,776,200 $538,589,123 $536,954,618 2018 $0 $4,776,200 $4,776,200 $543,365,323 2019 $0 $4,776,200 $4,776,200 $548,141 ,523 2020 $3,564,900 $4,239,100 $7,804,000 $555,945,523 TOTAL $444,592,074 $2,031,200 $109,322,249 $555,945,523 Notes:

1. Cash Flow is based on construction of the Independent Spent Fuel Storage Installation (ISFSI) and Fuel removed from HBPP in 2020 (Assumes Department of Energy Used Fuel Repository opens 2020 allowing Humboldt Bay Power Plant (HBPP) Fuel to be shipped duri

2. Trust Account Value of $348.3 million is Expense Equivalent Liquidation Value (Includes Tax Break)

Market Value of Trust as of 12/2010 was $313.8 million, actual expended as of 12/2010 was $188.7 million.